WO2016189940A1 - Tracteur - Google Patents

Tracteur Download PDF

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Publication number
WO2016189940A1
WO2016189940A1 PCT/JP2016/059062 JP2016059062W WO2016189940A1 WO 2016189940 A1 WO2016189940 A1 WO 2016189940A1 JP 2016059062 W JP2016059062 W JP 2016059062W WO 2016189940 A1 WO2016189940 A1 WO 2016189940A1
Authority
WO
WIPO (PCT)
Prior art keywords
hot air
exhaust heat
cover
shielding plate
air shielding
Prior art date
Application number
PCT/JP2016/059062
Other languages
English (en)
Japanese (ja)
Inventor
小宮利崇
松井浩
黒田智之
Original Assignee
ヤンマー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2015104322A external-priority patent/JP6499012B2/ja
Priority claimed from JP2015108012A external-priority patent/JP6522424B2/ja
Application filed by ヤンマー株式会社 filed Critical ヤンマー株式会社
Priority to KR1020177025712A priority Critical patent/KR101961058B1/ko
Priority to US15/575,740 priority patent/US10604088B2/en
Priority to EP16799648.7A priority patent/EP3299263B1/fr
Publication of WO2016189940A1 publication Critical patent/WO2016189940A1/fr
Priority to US16/801,397 priority patent/US11235713B2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0838—Insulating elements, e.g. for sound insulation for engine compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/082—Engine compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/14—Dashboards as superstructure sub-units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/06—Drivers' cabs
    • B62D33/0617—Drivers' cabs for tractors or off-the-road vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D49/00—Tractors
    • B62D49/06—Tractors adapted for multi-purpose use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D49/00—Tractors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the present invention relates to a structure of a tractor having a hot air shielding plate that connects a work machine to a rear end and is used for farm work and partitions a motor unit and an operation unit.
  • a tractor is equipped with a prime mover part at the front of the fuselage frame, a driving part is provided behind it through a hot air shielding plate, and the PTO shaft projects from the rear end of the transmission case along the fuselage frame.
  • Agricultural work using the power transmitted from the PTO shaft to the work equipment by pulling the work equipment connected to the rear end of the tractor body while traveling by the front and rear wheels provided on the axle cases extending from the front and rear axle cases below the machine body frame (For example, refer patent document 1).
  • the basic shape of the hot air shielding plate interposed between the prime mover portion and the operating portion is made common to form a common component member, and various types of prime movers and operating portions having different sizes by cutting the outer edge portion of the hot air shielding plate.
  • a hot air shielding plate is interposed between the motor unit and the operating portion, and the outer edge portion of the hot air shielding plate is cut so that the dimensions of the shielding plate can be adjusted, and the operating portion configuration is provided on the outer edge portion of the hot air shielding plate.
  • a member is mounted, and the mounting position of the driving unit constituent member can be changed according to the specification of the driving unit.
  • a hot air shielding plate is interposed between the motor unit and the operating unit, and the outer edge portion of the hot air shielding plate is cut to adjust the size of the shielding plate.
  • the height dimension can be adjusted by cutting the outer edge of the hot air shielding plate, so even for tractors with different specifications Since it can be shared by cutting adjustment of the same hot air shielding plate, it can be mass-produced with the same standard, and can satisfy the aesthetics without causing a great change in appearance.
  • the outer edge of the hot air shielding plate can be cut with a punching die or the like, it is easy to process the hot air shielding plate with different specifications, and a dedicated hot air shielding plate according to the specifications is manufactured separately. This is advantageous in terms of manufacturing cost.
  • invention of Claim 2 is invention of Claim 1, Comprising: The upper edge of the outer edge of the hot air shielding plate is cut so that the height of the shielding plate can be adjusted, and the dashboard as the operating part component is adjusted to the height of the upper edge of the hot air shielding plate. It is characterized by being freely mounted.
  • invention of Claim 3 is invention of Claim 1 or 2, Comprising: Mounting holes for attaching the wiper are drilled in the outer edge of the hot air shield plate before cutting, and the hot air shield plate does not cut the outer edge portion in the cabin type that requires a wiper, while the outer edge portion in the Lopp type that does not require a wiper It is characterized in that it can be used as both types by cutting.
  • a mounting hole for attaching a wiper is formed in an upper edge of the hot air shielding plate before cutting, and the upper end of the hot air shielding plate is formed by a cabin type that requires a wiper and a lops type that does not require a wiper. Whether the edge is cut or not can be used properly, and by matching the cutting standards, it is possible to use the hot air shielding plate of the same standard as well. While the hot air shielding plate can be reduced in height and the visibility during operation can be improved, the hot air shielding plate that is not cut can be used for attaching a wiper in the cabin type. Further, mass production is possible with the same standard, and therefore inventory storage can be efficiently performed as the same standard product, which is advantageous in terms of cost.
  • the invention according to claim 4 is the invention according to any one of claims 1 to 3, An exhaust heat cover having an exhaust heat hole is interposed in a gap formed between a bonnet that covers the prime mover portion and the hot air shielding plate.
  • the exhaust heat cover having the exhaust heat hole is interposed in the gap formed between the bonnet covering the prime mover part and the operation part, the exhaust heat hole of the exhaust heat cover
  • the heat generated from the prime mover can be discharged into the atmosphere steadily. Even if rainwater or car wash water flows from the exhaust heat hole, the exhaust heat cover is placed behind the hood that covers the prime mover, so rainwater etc. flows out of the machine behind the prime mover ( Discharge). Therefore, even when a diesel particulate filter (DPF) that generates heat is disposed in the prime mover, the DPF can be easily disposed at a position where rainwater or the like does not drip through the exhaust heat hole. It is possible to avoid the vapor from coming into contact with the DPF as vapor.
  • the exhaust heat cover can cover the gap formed between the bonnet and the operating unit. That is, the bonnet can be made compact and the work vehicle can be improved at the same time.
  • invention of Claim 5 is invention of Claim 4, Comprising:
  • the exhaust heat hole is an elongated hole extending in the front-rear direction, and the front end is disposed closer to the inner side, the rear end is disposed closer to the outer side, and a heat exhaust guide piece projects from the rear end edge, The exhaust heat flowing out from the prime mover through the exhaust heat hole is guided to the outside through the exhaust heat guide piece.
  • the exhaust heat flowing out from the prime mover part through the exhaust heat hole is guided toward the outside through the exhaust heat guide piece. It does not directly hit the operator who operates in the driving part. Therefore, even when the operating part is not covered with the cabin, the comfortability of the operator can be ensured satisfactorily.
  • invention of Claim 6 is invention of Claim 4 or 5, Comprising:
  • the exhaust heat cover has a cover front part that covers the pivot part from above, and a cover rear part that covers the pivot part from behind,
  • the rear portion of the cover is formed in a concave line extending in the left-right direction, and exhaust heat holes formed as elongated holes extending in the left-right direction are formed in the rear portion of the cover.
  • the cover rear portion of the exhaust heat cover is formed in a concave line extending in the left-right direction, the cover rear portion is attached to the cabin even when the operation portion is covered with the cabin. Interference with the base portion of the front wiper, the ejection portion of the windshield washer, and the like can be avoided. And since the exhaust heat hole made into the elongate hole extended in the left-right direction is formed in the rear part of a cover, the exhaust heat exhausted through an exhaust heat hole hits the windshield of a cabin, and functions as a defroster. As a result, exhaust heat can be used effectively.
  • the basic shape of the hot air shielding plate interposed between the prime mover portion and the operating portion is shared to form a common component member, and the prime mover and the operating portion having different sizes by cutting the outer edge portion of the hot air shielding plate.
  • FIG. 10 is a right side view of the hot air shielding plate shown in FIG. 9. It is a rear view (operating part side) of a Lope's type hot air shielding board concerning this embodiment. It is a cross-sectional side view of the rops type bonnet pivot part which concerns on this embodiment. It is an isometric view explanatory drawing of the LOSS type exhaust heat cover concerning this embodiment. It is a top view of the LOSS type exhaust heat cover concerning this embodiment. It is a front view of the LOSS type exhaust heat cover concerning this embodiment. It is a rear view of the LOSS type exhaust heat cover concerning this embodiment.
  • front / rear / left / right refers to the front of the tractor as viewed from the driver seated in the driver's seat, the rear as the rear, the right as viewed from the driver as the right, and the left as the left.
  • a tractor is configured such that a hot air shielding plate is interposed between a motor unit and an operating unit, and an outer edge portion of the hot air shielding plate is cut to adjust the size of the shielding plate.
  • the operation part constituting member is attached to the outer edge portion of the hot air shielding plate, and the attachment position of the operation part constituting member can be changed according to the specification of the operation part.
  • the tractors A1 and A2 are centered on a body frame 1 in which a longitudinal steel plate extending in the front-rear direction is arranged in the vertical direction and arranged on the left and right.
  • the front and rear wheels FT, RT to which the power is transmitted from the engine E through the transmission case M are disposed below the fuselage frame 1 while the motor unit 2 is mounted at the front thereof and the driving unit 3 is disposed at the rear thereof. Is pivoted.
  • the transmission case M is integrally fixed to the machine body frame 1, a PTO shaft (not shown) projects from the rear end, and various working machines connected to the rear portions of the tractors A1 and A2 via connecting tools, lifters, etc. (not shown). It is configured to be able to transmit power to.
  • Such a tractor constitutes a rops type tractor A1, which is a form of a work vehicle in which a rops R is erected on the back of the driving unit 3 as shown in FIG. 1, and the tractor shown in FIG. A cabin-type tractor A2 that covers the operation unit 3 is configured.
  • the rops-type tractor A1 is provided with a prime mover portion 2 at the front portion of a body frame 1 that is stretched in the front-rear direction to form a frame, and a transmission case at the rear end portion of the body frame 1 M is provided, and the prime mover unit 2 and the transmission case M are interlocked and connected via a power transmission shaft (not shown).
  • a front axle case FA having an axis line formed in the left-right direction is attached to the front portion of the body frame 1, and the front wheels FT and FT are connected to the left and right end portions of the front axle case FA via front wheel shafts (not shown). FT is attached.
  • rear axle cases RA and RA are attached to the left and right sides of the transmission case M, respectively, and the rear wheels RT and RT are interlocked and connected to the rear axle cases RA and RA via the rear wheel shaft 4.
  • the transmission case M and the front axle case FA are linked together via a front wheel drive shaft (not shown) to enable four-wheel drive for driving the front and rear wheels FT, RT.
  • the tractor A1 has a driving unit 3 disposed on the body frame 1 behind the prime mover unit 2. Specifically, as shown in FIGS. 4 and 5, the operating unit 3 is mounted and fixed on left and right base frames 5 and 5 attached to the left and right sides of the body frame 1, respectively.
  • the left and right base frames 5, 5 are connected by a connecting frame 5a extending in the left-right direction.
  • each base frame 5 forms an inclined frame 6 bent upward on the rear side, and an auxiliary beam 8 is integrated at the rear end portion via a horizontal connecting plate 7 provided in association with the rear axle case RA. Stands vertically.
  • a U-shaped floor frame body 60 that supports the operation unit floor 9 from below is installed on the front portion of each base frame 5 over the outside.
  • Each base frame 5 is mounted and fixed via a vibration-proof sound plate 12 on a driving unit mounting piece 11 having a front end projecting laterally of the body frame 1, and an auxiliary beam 8 is attached to the rear end.
  • the lower end portion of the auxiliary beam 8 is placed and fixed on the left and right rear axle cases RA.
  • the operation unit 3 stretches an operation unit floor 9 as a floor portion on each base frame 5 from a position immediately after the prime mover unit 2 to a position immediately before the mission case M.
  • a driver's seat frame 14 for constituting the driver's seat 13 is placed on and connected to the inclined frame 6 of each base frame 5. That is, the driver's seat frame 14 includes a horizontal seat frame 15, a back frame 16 that is inclined up to the rear edge thereof, a front frame 17 that hangs below the front end of the seat frame 15, and a lower end of the front frame 17. And a dustproof plate 18 extending forward.
  • the dust-proof plate 18 is connected to the rear edge of the driving unit floor 9 to block the lower part of the front end of the driver's seat frame 14 and prevent dust from rising from the ground through the space below the driver's seat 13 from entering the driving unit 3. is doing.
  • the outer surface of the back frame 16 is in close contact with and substantially fixed to a substantially triangular backing plate 19 that is in contact with the outer surface of the inclined frame 6 and is continuously provided. Furthermore, a fender inner wall portion 21 of a fender 20 that covers the inner side of the rear wheel RT is inserted between the seat frame 15 and the contact plate 19 raised from the inclined frame 6 of the left and right base frames 5. The three members are firmly connected to each other by bolts.
  • a hot air shielding plate 100 that shields the prime mover unit 2 and the operation unit 3 is erected on the front edge of the operation unit floor 9. Further, as shown in FIGS. 5 to 7, wind protection plates 111 and 111 are connected to the left and right sides of the hot air shielding plate 100 adjacent to each other.
  • a connecting case 27 protrudes from the hot air shielding plate 100 on the operation unit 3 side, and a handle H is attached to a steering column 24 that is tiltably attached to a steering bracket 28 fixed to the connecting case 27 via a handle support shaft 26. Provided.
  • the dashboard 25 is attached to the upper end edge of the hot air shielding plate 100 at the front upper side of the steering column 24, and the steering mechanism 22 is covered with a steering cover 43 except for the handle H.
  • the various operation pedals 23 are supported by a connection case 27 protruding from the hot air shielding plate 100, and a clutch pedal CP, a left brake pedal LBP, and a right brake pedal RBP are arranged from the left.
  • the accelerator pedal AP protrudes on the right step SRb that constitutes the floor surface.
  • a driver's seat 13 is disposed above the transmission case M located behind the engine E of the prime mover unit 2, and a pair of left and right fenders 20L and 20R are disposed on the left and right sides of the driver's seat 13. is doing.
  • the pair of left and right fenders 20L and 20R are formed by being raised from the left and right sides of the rear part of the driving unit floor 9, and cover the front upper parts of the rear wheels RT and RT.
  • the pair of fenders 20L and 20R are extended with outer fenders 42L and 42R that cover the outer edges of the fenders 20L and 20R and extend outward.
  • the Ropps R is a portal and is erected on the upper end of the auxiliary beam 8 that is erected on the upper surfaces of the left and right rear axle cases RA, and is seated on the driver's seat 13 when the fuselage rolls over. Fulfills the function of protecting.
  • the prime mover unit 2 is configured by disposing an engine E or the like at the front of the machine body frame 1, and a cooling fan 44 and a radiator 45 are erected immediately before the engine E. .
  • the motor unit 2 configured as described above is provided with a bonnet support frame (not shown), and the bonnet B is attached to the bonnet support frame so as to be opened and closed.
  • the engine room of the motor unit 2 is covered with the bonnet B. It is open.
  • the bonnet B opens downward and rearward from a ceiling surface portion 81 formed in a shape that reverses the ship bottom (so-called bottom ceiling), a mesh-like front grille 82, and left and right side surface portions 83 and 83. It is formed in a box shape.
  • the exhaust heat cover 90 having the exhaust heat holes 130 is formed in the gap 88 formed between the bonnet B covering the prime mover unit 2 configured as described above and the operation unit 3. Is installed.
  • the heat exhaust cover 90 is formed in a rear view portal shape having the same shape as the shape of the rear edge of the bonnet B, and is connected to the upper part of the hot air shielding plate 100.
  • the cabin-type tractor A2 has the same basic configuration as the above-described lops-type tractor A1. That is, as shown in FIGS. 19 to 22, a prime mover part 2 is provided at the front part of the fuselage frame 1, and a transmission case M is provided at the rear end part of the fuselage frame 1.
  • the prime mover part 2 and the transmission case M The front and rear wheels FT and RT are arranged on the left and right axis lines of the front axle case FA and the rear axle case RA to enable four-wheel drive by interlocking connection via a transmission shaft (not shown).
  • the cabin-type tractor A2 is different in that a cabin C that covers the operation unit 3 is provided in place of the lops R and the windbreak plates 111 and 111.
  • the floor frame body 60 is not formed on the left and right base frames 5 ′ and 5 ′, and as shown in FIG.
  • a floor-view floor mounting plate 220 and a floor-reinforcing floor reinforcing plate 221 having a rectangular shape in plan view are connected in series, and left and right steps SL and SR each composed of one piece are placed and fixed thereon.
  • a driving unit floor 9 is stretched over the upper side.
  • the cabin C includes a cabin frame 222 that is framed so as to form a hexahedron, and each surface portion 223 that is formed by each piece that forms the cabin frame 222. 225, 231 and 236.
  • the cabin frame 222 has a ceiling portion 224 formed in a flat box shape on the cab ceiling surface portion 223, a windshield portion 226 is stretched on the upper portion of the front surface portion 225, and a left and right front wall portion on the lower portion. 227 is stretched.
  • the hot air shielding plate 200 forms a part of the front portion 225 of the cabin C in the lower central portion. That is, the front surface portion 225 is configured by the hot air shielding plate 200, the left and right front wall portions 227 that are stretched to the left and right of the hot air shielding plate 200, and the windshield portion 226 that is stretched on the hot air shielding plate 200.
  • a wiper hole 230 through which the wiper shaft portion 229 can be inserted is formed in the center of the lower edge of the windshield portion 226. Further, a wiper shaft hole 202 is formed in the substantially central portion of the upper edge 214 of the outer edge portion 203 of the hot air shielding plate 200, and a wiper hole 230 formed in the windshield portion 226 and a wiper shaft hole formed in the hot air shielding plate 200. 202 is arranged so as to communicate with 202.
  • the lower edge central portion of the windshield portion 226 is disposed along the upper edge portion 201a of the hot air shielding plate 200 on the prime mover portion 2 side, and the operating portion of the hot air shielding plate 200 as shown in FIG.
  • a wiper mechanism W which is the base of the wiper portion 228, is installed at the approximate center of the upper edge portion 201b of the third side, and the wiper shaft portion 229 that protrudes from the wiper mechanism W toward the prime mover portion 2 is inserted into the wiper shaft hole 202 and the wiper hole 230.
  • the wiper shaft part 229 protrudes from the front surface of the windshield part 226 by penetrating.
  • a wiper portion 228 that is movable to remove rain, snow, dust, and the like attached to the windshield portion 226 and secure the driver's field of view is connected to the end portion of the wiper shaft portion 229. And is disposed in contact with the front glass portion 226 below the front surface.
  • the fixing method of the hot air shielding plate 200 is the same as that of the above-described Lopp type tractor A1.
  • the rear surface portion 231 is integrally connected to the rear end of the fender 20 and the rear lower end of the cabin frame 222 through the connection bracket 233. Yes. Further, the rear lateral frame 232 provided in the middle of the rear surface of the cabin frame 222 is integrally connected to the back frame 16 of the driver's seat frame 14 by bolts.
  • the front lower end edge of the cabin frame 222 that is, the horizontal lower frame 235 in front of the semicircular frame 234 placed on the fender 20, is located at the outer edge of step S as shown in FIGS. They are in contact with each other and are continuously provided.
  • a pair of left and right entrance / exit door portions 237 and 237 are stretched on the front portion of the left and right side surface portions 236 so as to be freely opened and closed.
  • reference numeral 239 denotes an opening / closing operation grip provided outside the entrance / exit door portion 237, and a grip pipe (not shown) is stretched on the inner surface of the entrance / exit door portion 237.
  • a pair of left and right side window portions 240 are stretched at the rear of the left and right side portions 236 so as to be freely opened and closed.
  • a rear glass portion 241 is stretched on the rear surface portion 231 so as to be freely opened and closed.
  • both the lops-type tractor A1 and the cabin-type tractor A2 are provided with the operating unit 3 on the left and right base frames 5, 5 'connected to the body frame 1, and the hot air shielding plate 100, It is possible to fix firmly including 200.
  • the cabin-type tractor A2 according to the embodiment of the present invention has the basic structure as described above.
  • the hot air shielding plates 100 and 200 that are the main part of the present invention will be described by taking two types of tractors A1 and A2 of a lops type and a cabin type as examples.
  • [Explanation of hot air shielding plate configuration] As shown in FIGS. 3 and 23, the hot air shielding plates 100 and 200 of the tractors A1 and A2 according to the present embodiment are interposed between the prime mover unit 2 and the operation unit 3, and the lower end edge thereof is operated. The upper end edge of the hot air shielding plates 100 and 200 is connected to the exhaust heat covers 90 and 30 interposed between the rear end edge of the bonnet B.
  • the hot air shielding plates 100 and 200 are provided to partition and block the boundary portion so that the heat generated from the operation of the engine E of the prime mover unit 2 does not affect the operation unit 3, and the engine of the prime mover unit 2 It is formed in a size and shape that blocks the rear end surface of the room, and its lower end edge is connected and fixed to the operation unit floor 9 with bolts.
  • a windproof plate 111 is integrally formed with the lops type, and a left and right front wall portion 227 is integrally formed with the cabin type.
  • the front plate is partitioned by the shielding plates 100 and 200 and the windproof plate 111 or the left and right front walls 227, and the lower end of the outer frame GF of the windproof plate 111 or the left and right front walls 227 is connected to the left and right steps SL and SR.
  • the hot air shielding plates 100 and 200 leave the outer edge portion 203 except for the inner side portion of the lower end edge of the rectangular plate-shaped steel plate, and press the other portions than the portion 203 by pressing. It forms so that it may become convex at the operation part 3 side.
  • the convex center part of the hot air shielding plates 100 and 200 forms a mechanism flange convex part 204 for disposing the steering mechanism 22 and the like on the driving part 3 side.
  • the convex lower end edge is formed so as to protrude further toward the operation unit 3 than the mechanism flange projection 204, and a floor connecting unit 205 that can be connected to the flange 10 formed on the front end edge of the operation unit floor 9. Forming.
  • the hot-air shielding plates 100 and 200 are formed so that most of the outer edge portion 203 other than the inner portion of the lower end edge is flat, and the mechanism flange convex portion 204 and the floor connecting portion 205 are convex toward the operating portion 3 side. It is formed as follows.
  • the floor connecting portion 205 is formed so as to protrude from the mechanism flange convex portion 204 to the operating portion 3 side, as shown in FIGS. 7 and 27, the handle support shaft 26 and the brake constituting the operating mechanism. This is to cover the shaft 40 and the clutch shaft 41 so that the shaft 40 and the clutch shaft 41 can be led out under the driving unit floor 9 without bending.
  • the hot air shielding plates 100 and 200 are formed so that the substantially upper half side of the mechanism flange convex portion 204 is substantially vertical when viewed from the side, and substantially below the mechanism flange convex portion 204.
  • the half part side is formed in a curved shape in a side view from the prime mover part 2 side to the operating part 3 side. That is, the flat outer edge portion 203 having a surface direction in the horizontal direction is formed so that the surface direction is inclined toward the prime mover portion 2 as it goes downward.
  • a rectangular upper dashboard mounting flange 206 is formed at the upper center and upper left and right of the outer edge 203 of the hot air shielding plate 100, 200 by bending toward the operation unit 3 as shown in FIGS. Forming.
  • the upper dashboard mounting flange 206 is used to fasten the upper part of the dashboard 25 shown in FIG. 6 and FIG.
  • a bolt insertion hole 207 is formed at the center of the front end side of the dashboard mounting flange 206.
  • a mounting flange 215 is formed.
  • the lower dashboard mounting flange 215 is provided in order to fasten the lower part of the dashboard 25 shown in FIGS. 6 and 26, which forms a part of the operating part constituent member, to the operating part 3 side of the hot air shielding plates 100 and 200 with bolts.
  • a bolt insertion hole 217 is formed at the center of the lower end of the dashboard mounting flange 215.
  • the lower dashboard mounting flange 215 is formed at a different height depending on the height of the dashboard 25.
  • the mechanism flange convex portion 204 is used for driving the tractors A1 and A2 such as the steering mechanism 22 and the operation pedals 23.
  • a plurality of bolt insertion holes 208 are provided for fixing or mounting necessary operation unit components.
  • the floor connecting portion 205 is connected to the outer edge portion 203 on the left and right end sides, the upper surface is connected to the lower end edge of the mechanism flange convex portion 204, and the brake shaft hole 209,
  • a clutch shaft hole 210 is formed on the left side, and a handle support shaft hole 211 is formed in a substantially central portion.
  • a substantially gate-shaped rear end wall 212 is formed by extending downward from the rear upper end of the floor connecting portion 205.
  • a plurality of bolt insertion holes 213 are formed in the rear end wall 212 along the gate shape, and communicated with the plurality of bolt holes 10a formed in the flange 10 of the operation unit floor 9 to be connected to the floor connecting unit 205.
  • the operating unit floor 9 is connected by bolts and nuts.
  • the windshield 226 is unnecessary. Accordingly, since the wiper mechanism W is not required, it is not necessary to provide a region for installing the wiper mechanism W or the wiper shaft hole 202 in the upper outer edge portion 203 of the hot air shielding plate 100.
  • the driving unit 3 is surrounded by the cabin C, so that the windshield unit 226 is provided on the upper portion of the front surface portion 225 of the cabin C, and the wiper mechanism W is also required.
  • the cabin-type hot air shielding plate 200 is higher in the upper edge portion 214 of the outer edge portion 203 than the lops-type hot air shielding plate 100 in order to install the wiper mechanism W and the wiper shaft hole 202.
  • the upper end edge portion 214 of the LOSS type hot air shielding plate 100 can be formed lower than the cabin type.
  • the hot air shielding plate according to the present embodiment is formed in a common shape with two specifications except for the upper edge 214 and the left and right middle portion 218 of the outer edge portion 203, the cabin type hot air shielding plate 200 is shared.
  • a mold is manufactured at the time of manufacturing this member.
  • a part of the upper end edge portion 214 that is not necessary for the LOPUS type is cut off, and the left and right middle portions 218 of the outer edge portion 203 are removed. Need only be prepared for a punching die for forming a new upper edge portion 214 and left and right midway portions 218 having the same upper and lower dashboard mounting flanges 206 and 215.
  • the hot air shielding plates 100 and 200 according to the present embodiment have been described by showing the lops type and the cabin type tractors A1 and A2 as an example, but the size of the engine E and the like are different. Even if the specifications have different sheath widths, it is configured so that various specifications can be accommodated by cutting or pressing the outer edge portion 203 of the hot air shielding plates 100 and 200.
  • the frame body of the windproof plate 111 is provided in the middle of the outer edge portion 203 of the hot air shielding plate 100 on the operation unit 3 side.
  • One end portion of an L-shaped outer edge frame GF formed by a hollow square pipe constituting the rim is connected by welding or bolts, and the other end portion is welded to left and right steps SL and SR fixed to the left and right base frames 5 Connected with bolts.
  • the outer edge frame GF is provided in the middle of the outer edge portion 203 of the hot air shield plate 200 on the operation portion 3 side. Connected by welding or bolts.
  • the exhaust heat cover 90 (30) disposed between the bonnet B and the hot air shielding plate 100 (200) is an exhaust heat cover formed on the exhaust heat cover 90 (30).
  • the hot air shielding plate flange 216 that can be screwed and fixed with the flange 39 and the bolt is integrally formed by welding to a predetermined portion of the hot air shielding plates 100 and 200 on the prime mover portion 2 side by welding. Therefore, even if the height of the bonnet B changes depending on whether or not the upper edge portion 214 of the hot air shielding plates 100 and 200 is cut, the hot air shielding plate flange 216 may be appropriately disposed at a predetermined position of the hot air shielding plates 100 and 200.
  • the tractors A1 and A2 are configured, and the hot air shielding plates 100 and 200 are interposed between the motor unit 2 and the operating unit 3, and the outer edges of the hot air shielding plates 100 and 200 are disposed.
  • the portion 203 is cut so that the dimensions of the shielding plates 100 and 200 can be adjusted, and the operating portion constituent member is attached to the outer edge portion 203 of the hot air shielding plates 100 and 200 so that the mounting position of the operating portion constituent member is determined.
  • the hot air shielding plates 100 and 200 can be used as common components but also many of the operation units can be used as common components.
  • the height dimension can be adjusted by cutting the outer edge portion 203 of the hot air shielding plates 100 and 200. Even tractors with different specifications can be shared by adjusting the cutting of the same hot air shielding plates 100 and 200, so that they can be mass-produced with the same standard and satisfy the aesthetics without causing any significant changes in appearance. You can also.
  • the outer edge portion 203 of the hot air shielding plate 100, 200 can be cut by a punching die or the like, it is easy to process the hot air shielding plate with different specifications, and a dedicated hot air shielding plate according to the specifications is provided. This is advantageous in terms of manufacturing cost as compared with the case of manufacturing separately.
  • the upper edge 214 of the outer edge 203 of the hot air shielding plate 200 is cut so that the height of the shielding plate 200 can be adjusted.
  • a wiper shaft hole 202 for attaching a wiper is formed in the upper edge portion 214 of the hot air shielding plate 200 before cutting, and the hot air shielding plate 200 has a cabin type that requires the wiper mechanism W and a lops type that does not require the wiper. The presence or absence of cutting of the upper edge portion 214 can be properly used. By matching the cutting standards, it is possible to use the hot air shielding plate 200 of the same standard. In particular, in the LOSS type, the hot air shielding plate 200 is used.
  • the hot air shielding plate 200 While the height of the hot air shielding plate 200 can be suppressed by only cutting of the above and the visibility during operation can be improved, the hot air shielding plate 200 that is not cut can be used by attaching the wiper mechanism W in the cabin type, Mass production is possible with the same standard from the beginning of manufacturing the hot air shielding plate 200. Therefore, stock storage can also be efficiently carried out as the same standard product, which increases the cost. Advantageous to become.
  • the bonnet B is pivotably supported via a pivotal support 71 as shown in FIGS. 12 and 32.
  • the pivot portion 71 includes a pivot piece 72 formed in a U-shape when viewed from the front, a pivot 73 that is horizontally placed between the upper ends of the pivot piece 72 with the axis lined in the left-right direction, and a pivot 73 that is rotatably fitted to the pivot 73.
  • the boss portion 74 and an opening / closing arm 75 having a base edge portion attached to the boss portion 74 are formed.
  • the open / close arm 75 is formed by forming the arm front portion 76 in a square plate ring shape and curving the arm rear portion 77 downward in a U shape in a side view.
  • the rear end 77 of the arm is pivotally supported on the pivot 73 via the boss 74, and the front end is connected integrally with the rear end of the arm front 76.
  • the rear end portion of the bonnet B is attached to the arm front portion 76 with a connecting bolt 78 via a front / rear extending frame 93. Accordingly, the bonnet B can be opened by turning the pivot 73 around the bonnet fulcrum and turning the front end upward.
  • the arm rear portion 77 of the opening / closing arm 75 is formed by curving downward, so that the rear end edge portion of the bonnet B interferes with a heat exhaust cover 30 described later covering the portion directly above the pivot 73. This prevents the bonnet B from opening up.
  • Reference numeral 56 denotes an air cleaner.
  • the air cleaner 56 is connected to the engine E via a proximal end side intake pipe 57, and the distal end side intake pipe 58 is connected to the air cleaner 56.
  • the LOSS type heat exhaust cover 90 includes a front and rear wide portion 110 corresponding to the ceiling surface 81 a of the ceiling surface portion 81, left and right side surfaces 81 b and 81 b, and left and right side surface portions 83 of the ceiling surface portion 81. , 83 and the corresponding front and rear short width portions 115 are formed in a gate shape having the same shape as that of the rear edge of the bonnet B in the rear view.
  • the front / rear wide portion 110 is formed to have a front / rear width that is approximately 1/11 of the front / rear width of the bonnet B, and the front / rear short width portion 115 is formed to have a front / rear width that is approximately a quarter of the front / rear wide portion 110. is doing.
  • the front end edge part 112 of the front-back wide part 110 and the front end edge part 122 of the front-back short width part 115 are formed in the stepped concave shape, and are integrally formed in the bending shape by the side view.
  • the rear end edge portion 114 of the front and rear wide portion 110 and the rear end edge portion 124 of the upper half portion of the front and rear short width portion 115 are formed in a stepped concave shape and are integrally formed along the flush virtual vertical end surface. is doing.
  • the rear end edge portion of the bonnet B is formed so as to be able to fit into the front end edge portion 112 of the front / rear wide portion 110 and the front end edge portion 122 of the front / rear short width portion 115 formed in a stepped concave shape in abutting manner.
  • the front end edge 25a at the upper part of the dashboard 25 is formed in a stepped ridge, and the rear end edge 114 of the front and rear wide part 110 and the upper half of the front and rear short part 115 formed in a stepped concave shape. It is formed so as to be able to fit with the rear end edge portion 124 in a butting manner.
  • the surfaces of the bonnet B, the exhaust heat cover 90, and the dashboard 25 are formed to be flush with each other.
  • the exhaust heat cover 90 is formed of a material (for example, an iron plate) having thermal conductivity capable of releasing heat to the atmosphere and rigidity that is difficult to be damaged by falling objects such as stones.
  • the front / rear wide part 110 covers the pivot 73 of the pivot 71 from above, and the front end edge 112 of the front / rear wide part 110 is disposed close to the pivot 73 of the pivot 71 so that the ceiling surface of the closed bonnet B is closed.
  • the rear end edge portion 81a and the front end edge portion 112 of the front and rear wide portion 110 are arranged on the inner and outer sides, and a sealing material 126 is provided between the overlap portions to maintain the sealing performance. ing.
  • the sealing material 126 extends in the left-right direction and is formed to have substantially the same width as the left-right width of the front end edge portion 112 of the front-rear wide width portion 110.
  • a plurality (six in this embodiment) of exhaust heat holes 130 are provided in the front-rear wide portion 110 with a space in the left-right direction.
  • the exhaust heat hole 130 is an elongated hole extending in the front-rear direction, the front end is disposed on the inner side, the rear end is disposed on the outer side, and a heat exhaust guide piece 140 is projected from the rear end edge. ing. And the exhaust heat which flows out through the exhaust heat hole 130 from the motor
  • the exhaust heat holes 130 are arranged in parallel on the left half of the front / rear wide portion 110 in parallel with each other in an inclined manner, while the three heat exhaust holes 130 are inclined on the right half of the front / rear wide portion 110.
  • a heat exhaust guide piece 140 is formed so as to protrude upward in a raised shape.
  • the heat exhaust guide piece 140 has an opening surface 141 of approximately 45 degrees from the front. It is formed so as to be directed in a direction biased outward at an angle.
  • the exhaust heat in the bonnet B is released to the outside through the three exhaust heat holes 130 in the left half, and is released from the opening surface 141 toward the left front side through the exhaust heat guide piece 140.
  • it is discharged outside the machine through the three heat exhaust holes 130 in the right half, and is discharged from the opening surface 141 toward the front right side through the heat exhaust guide piece 140.
  • the exhaust heat released from each exhaust heat hole 130 is released by the exhaust heat guide piece 140 so as to expand in the left and right direction toward the direction opposite to the traveling direction of the airframe, and the rear of each exhaust heat hole 130.
  • the operator who sits in the driver's seat 13 arranged and operates is prevented from hitting.
  • the relative arrangement positional relationship between the exhaust heat hole 130 and the DPF 53 is such that the DPF 53 is not disposed immediately below the exhaust heat hole 130.
  • the DPF 53 is disposed in front of the exhaust heat hole 130 so that rainwater or the like does not contact the DPF 53 that generates heat even when rainwater or washing water flows through the exhaust heat hole 130.
  • the exhaust heat cover 90 having the exhaust heat holes 130 is interposed in the gap 88 formed between the bonnet B that covers the prime mover unit 2 and the operating unit 3.
  • the heat generated from the prime mover unit 2 can be steadily discharged into the atmosphere through the exhaust heat hole 130 of the exhaust heat cover 90.
  • the exhaust heat cover 90 is disposed behind the hood B that covers the prime mover unit 2, so that rainwater or the like is removed behind the prime mover unit 2. It can flow out (discharge) out of the machine.
  • the DPF 53 that generates heat can be easily disposed at a position where rainwater or the like does not drip through the exhaust heat hole 130, and the rainwater or the like comes into contact with the DPF 53 and steam. Can be avoided.
  • the exhaust heat cover 90 can cover the gap 88 formed between the bonnet B and the operation unit 3. That is, the bonnet B can be made compact and the aesthetics of the tractor A2 can be improved at the same time.
  • the front end edge portion of the heat exhaust cover 90 arranged close to the pivotal support portion and the rear end edge portion of the closed bonnet B are arranged by being superposed in the vertical direction, and a sealing property is provided between them. Since the sealing material 126 for holding is provided, the sealing performance of the connecting portion between the front end edge portion of the heat exhaust cover 90 and the rear end edge portion of the bonnet B is ensured through the sealing material 126. It is possible to prevent rainwater and the like from entering from the connecting portion.
  • the front and rear wide portion 110 of the heat exhaust cover 90 covers the pivot 73 of the pivotal support 71 that pivotally supports the bonnet B via the opening / closing arm 75 from above, and the front end edge portion of the front and rear wide portion 110 on the pivot 73. Since the front end edge of the front and rear wide section 110 and the rear end edge 89 of the ceiling surface 81a of the bonnet B can be disposed close to the pivot 73, the connection is possible. It is possible to prevent the positions from varying. As a result, the connecting portion can be sealed with high accuracy. That is, it is possible to ensure good sealing performance.
  • the exhaust heat flowing out from the motor unit 2 through the exhaust heat hole 130 is guided toward the outside through the exhaust heat guide piece 140, the exhaust heat is directed rearward and outward. It is fluidized and does not directly hit an operator operated by the operation unit 3. Therefore, even when the operation unit 3 is not covered with the cabin C, the comfortability of the operator can be ensured satisfactorily.
  • the exhaust heat cover 90 is formed of a material (for example, an iron plate) having heat conductivity that can dissipate into the atmosphere and rigidity that is difficult to be damaged by falling objects such as stones, the heat of the exhaust heat cover 90 is obtained. Due to the conductivity, the heat generated by the motor unit 2 can be radiated to the atmosphere steadily, and the rigidity of the exhaust heat cover 90 can prevent damage caused by falling objects such as stones, so that the exhaust heat cover 90 has a good appearance. Can be secured.
  • a material for example, an iron plate
  • the cabin-type heat exhaust cover 30 has a cover front portion 31 that covers the pivot 73 of the pivot portion 71 from above, and a cover rear portion 33 that covers the pivot 73 from the rear. is doing.
  • the cover rear portion 33 is formed in a groove extending in the left-right direction, and a heat exhaust hole 34 is formed in the cover rear portion 33 as an elongated hole extending in the left-right direction.
  • the bonnet B is cut into a horizontally long trapezoidal shape with the rear end portion of the ceiling surface 81a facing forward to form the exhaust heat cover disposing recess 35. is doing.
  • An exhaust heat cover 30 is disposed in the exhaust heat cover disposition recess 35.
  • the heat exhaust holes 34 are formed horizontally long in the left-right direction, and are arranged in parallel in the front-rear direction on the left side of the cover rear portion 33, and in the front-rear direction on the right side of the cover rear portion 33. Three are arranged.
  • a more concave central recess 36 is formed between the left and right heat exhaust holes 34, that is, in the center of the cover rear portion 33, and the base of the front wiper 262 and the ejection portion of the windshield washer (not shown). A space for avoiding interference with the above is secured.
  • a front end edge 32 that is slightly narrower than the left and right widths of the cover front portion 31 is projected forward from the front lower portion of the cover front portion 31, and a sealing material 126 is attached to the front end edge 32. .
  • the exhaust heat cover 30 is formed of a material (for example, an iron plate) having thermal conductivity capable of heat radiation to the atmosphere and rigidity that is not easily damaged by falling objects such as stones. Therefore, the heat conductivity of the exhaust heat cover 30 can steadily radiate the heat generated by the motor unit 2 to the atmosphere, and the rigidity of the exhaust heat cover 30 can prevent damage caused by falling objects such as stones. The appearance of the exhaust heat cover 30 can be ensured satisfactorily.
  • the sealing material 126 extends in the left-right direction and is formed to have substantially the same width as the left-right width of the front end edge portion 32.
  • the seal material 126 is integrally formed of an elastic material from a cylindrical seal main piece 127 extending in the left-right direction and a seal mounting piece 128 having a U-shaped cross section extending in the left-right direction.
  • the seal attachment piece 128 is attached to the front edge portion 32 by being externally fitted from the front.
  • the main seal piece 127 is integrally formed on the upper surface of the seal attachment piece 128, while the rear end edge 89 of the ceiling surface 81a of the bonnet B is formed in a folded shape at a right angle.
  • the rear end edge portion 89 of the ceiling surface 81a formed in a folded shape at a right angle abuts on the peripheral surface of the rear half portion of the piece 127 so that the sealing performance is maintained well.
  • the exhaust heat holes 34 are arranged behind the DPF 53 with a constant interval D. For this reason, even when rainwater or washing water flows through the exhaust heat hole 34, rainwater or the like does not contact the DPF 53 that generates heat.
  • cover front mounting hole 37 is a cover front mounting hole provided on the left and right sides of the cover front portion 31, and each cover front mounting hole 37 is formed in alignment with each cover front mounting hole (not shown).
  • cover front part 31 is fixed with screws.
  • 38 is a cover rear mounting hole provided on the left and right sides of the cover rear 33, and each cover rear mounting hole 38 is formed in alignment with each cover rear mounting hole (not shown), The cover rear portion 33 is fixed by screws.
  • the cover rear portion 33 of the heat exhaust cover 30 is formed in a concave line extending in the left-right direction, so that even when the operation unit 3 is covered with the cabin C, the cover rear portion 33 can avoid interfering with the base part of the front wiper 262 attached to the cabin C, the ejection part of a windshield washer (not shown), and the like.
  • the exhaust heat hole 34 which became the elongate hole extended in the left-right direction is formed in the cover rear part 33, the exhaust heat exhausted through the exhaust heat hole 130 is the windshield of the cabin C arrange
  • Waste heat cover (cabin type) 90 Waste heat cover (Loops type) 100 Hot air shielding plate (Loops type) 200 Hot air shielding plate (cabin type) 202 Wiper shaft hole 203 Outer edge 214 Upper edge 228 Wiper

Abstract

L'invention concerne un tracteur dans lequel des plaques de blocage d'air chaud, dont chacune est interposée entre une unité de machine motrice et une unité d'entraînement, présentent une forme de base commune et servent d'éléments pouvant être partagés, ce qui permet de respecter les divers types de spécifications des unités de machine motrice et des unités d'entraînement présentant des tailles différentes par la découpe des bords externes des plaques de blocage d'air chaud, et permettant d'obtenir une augmentation de la commodité dans le travail d'assemblage du tracteur, et les éléments pouvant être partagés permettent une consommation de masse et un entreposage des stocks efficace et présentent également un avantage en termes de coûts. Le tracteur selon la présente invention est caractérisé en ce qu'il est configuré de sorte qu'une plaque de blocage d'air chaud soit interposée entre une unité de machine motrice et une unité d'entraînement et la taille de la plaque de blocage peut être réglée par la découpe du bord externe de la plaque de blocage d'air chaud et de sorte qu'un élément d'unité d'entraînement soit monté sur le bord externe de la plaque de blocage d'air chaud et la position de montage de l'élément d'unité d'entraînement peut être modifiée selon les spécifications de l'unité d'entraînement.
PCT/JP2016/059062 2015-05-22 2016-03-22 Tracteur WO2016189940A1 (fr)

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KR1020177025712A KR101961058B1 (ko) 2015-05-22 2016-03-22 트랙터
US15/575,740 US10604088B2 (en) 2015-05-22 2016-03-22 Tractor
EP16799648.7A EP3299263B1 (fr) 2015-05-22 2016-03-22 Méthode d'assemblage d'un tracteur
US16/801,397 US11235713B2 (en) 2015-05-22 2020-02-26 Tractor

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JP2015-104322 2015-05-22
JP2015104322A JP6499012B2 (ja) 2015-05-22 2015-05-22 トラクタ
JP2015108012A JP6522424B2 (ja) 2015-05-27 2015-05-27 作業車
JP2015-108012 2015-05-27

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US15/575,740 A-371-Of-International US10604088B2 (en) 2015-05-22 2016-03-22 Tractor
US16/801,397 Continuation US11235713B2 (en) 2015-05-22 2020-02-26 Tractor

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US11235713B2 (en) 2022-02-01
US20200189493A1 (en) 2020-06-18
US20180118134A1 (en) 2018-05-03
US10604088B2 (en) 2020-03-31
KR101961058B1 (ko) 2019-03-21
EP3299263A1 (fr) 2018-03-28

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